12506117 has 4 divisors (see below), whose sum is σ = 13468140. Its totient is φ = 11544096.

The previous prime is 12506083. The next prime is 12506147. The reversal of 12506117 is 71160521.

12506117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71160521 = 17 ⋅4185913.

It can be written as a sum of positive squares in 2 ways, for example, as 1223236 + 11282881 = 1106^2 + 3359^2 .

It is a cyclic number.

It is not a de Polignac number, because 12506117 - 2¹⁰ = 12505093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12506092 and 12506101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12506147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480992 + ... + 481017.

It is an arithmetic number, because the mean of its divisors is an integer number (3367035).

Almost surely, 2^12506117 is an apocalyptic number.

It is an amenable number.

12506117 is a deficient number, since it is larger than the sum of its proper divisors (962023).

12506117 is an equidigital number, since it uses as much as digits as its factorization.

12506117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962022.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 12506117 is about 3536.3988745615. The cubic root of 12506117 is about 232.1172923056.

Adding to 12506117 its reverse (71160521), we get a palindrome (83666638).

The spelling of 12506117 in words is "twelve million, five hundred six thousand, one hundred seventeen".